Spring-motor



No Model!) JqT. WALLACE & W. D..HOLLE1V[AN.

SPRING MOTOR.

Patented Feb. 11,1890.

LE1 TB. QVMW, I A WM gmmw UNITED STATES PATENT OFFICE.

JAMES .T. VVALLAOE AND IVILLIAM D. IIOLLEMAN, OF GOULD, TEXAS.

MOTOR.

SPECIFICATION forming part of Letters Patent No. 421,334, dated February11, 1890.

Application filed August 20, 1889. Serial No. 321,415. (No model.)

To all whom it may concern.-

Be it known that we, JAMES T. \VALLAOE and WILLIAM D. I-IOLLEMAN, ofGould, in the county of Rusk and State of Texas, have invented certainnew and useful Improvements in Spring-Motors; and we do hereby declarethe following to be afull, clear, and exact description of theinvention,such as will enable others skilled in the art to which itpertains to make and use it, reference being had to the accompanyingdrawings, which form part of this specification.

Our invention relates to an improvement in spring-motors; and itconsists in, first, the combination, with a spring-motor, of aspringstop, which is provided with a bend at one end and a handle at theother, and is held either in or out of contact with the wheel by theelasticity of the spring, and, second, the combination, with the motor,of a spring-brake and a screw-rod provided with a cone for hearingagainst the spring and either tightening or loosening it.

Figure 1 is a side elevation of the motor alone. Fig. 2 is an edge viewof the same.

A represents the motor, which is to be placed in a suitable inclosingcase or frame, and is provided with either one, two, ormore springs 13,according to the power required. Each of the springs B transmits itspower to the driving-shaft C, to which the fan is to be attached. Incase but a light power is required only one spring and set of wheelswill be used. In order to regulate the speed at which the fan shall bedriven, a spring E is secured in the frame and has its free end to bearagainst a friction-driun D, placed upon one of the shafts of the motor.Passing through the frame at right angles thereto is the rod F, whichmay be made screw-threaded at one end and which is provided with aconeG, which bears against the outer side of the spring E. In proportion asthe cone is forced inward and made to press against the spring E thefriction of the spring upon the small drum D is increased, and as therod F is moved outward, taking the pressure of the cone off from thespring .E, the friction of the spring against the drum D is decreased.The greater the friction of the spring against the drum D the less speedthe fan will have, and the less friction of the spring against the drumthe greater the speed.

In order to start and stop the motor at the will. of the operator, thereis secured to the frame of the motorthe stop H, which is provided with acatch at one end to engagewith the wheel I of the motor and. with ahandle J at the other end. This stop is pivoted at L,

and bearing against the back of the stop is the spring M, which has itsouter end rigidly fastened to the frame of the motor. Vhen the handle Jis moved inward, the projection upon the end of the stop H is moved outof contact with the wheel I, and when the handle J is forced outward theprojection engages With the wheel I, so as to stop the motor. The springM is buckled or bent outward at its center by the movement of the stopH, and is thus made to hold the stop either in or out of contact withthe wheel I.

IIaving thus described our invention, we claiml. The combination of amotorwith a drum attached to one of its shafts, a spring, and a rodprovided with a cone bearing laterally against said spring forincreasing or decreasing the friction of the spring again st the drum,substantially as shown.

2. The combination of the motor with a stop II, which is provided with abend at one end and a handle at the other, with the spring M, whichbears upon the stop and which is rigidly secured to the frame at itsouterend, the stop being pivoted at L, substantially as described.

In testimony whereof We aflix our signatures in presence of twowitnesses.

JAMES T. WALLACE. \VILLIAM D. I-IOLLEMAN. Witnesses:

G. R. Wool), T. I. CLAYTON.

